Claude Sonnet 5 is Anthropic’s latest Sonnet-class model, now available in GitHub Copilot. It brings strong coding performance to everyday development and agentic workflows, giving developers a new Sonnet-class option for tasks across the IDE and CLI.

In our internal testing, Claude Sonnet 5 showed strong results across a range of coding scenarios, including particularly strong performance on CLI-style tasks. It also demonstrated excellent prompt-cache utilization and competitive latency at lower effort levels, making it a strong choice for developers who want fast, capable Sonnet-class performance in Copilot.

This model is billed at provider list pricing under Usage Based Billing. See GitHub Copilot’s pricing for models and requests for details.

Availability in GitHub Copilot

Claude Sonnet 5 will be available to Copilot Pro, Pro+, Max, Business, and Enterprise users.